Produção Nacional
Revisado por pares
Fluid Dynamics Analysis of a Draft-Tube Continuous Spouted Bed with Particles Bottom Feed using CFD
2009; American Chemical Society; Volume: 48; Issue: 16 Linguagem: Inglês
10.1021/ie900547u
ISSN1520-5045
AutoresCezar Augusto da Rosa, José Teixeira Freire,
Tópico(s)Particle Dynamics in Fluid Flows
ResumoIn this work the fluid dynamics behavior of a draft tube continuous spouted bed with particle bottom feed was studied through experimental data of static pressure, fountain height, and fluid mass flow in the annulus, as well as using the computational fluid dynamics. Experiments using glass beads as solid phase were carried out in two different velocity inlet conditions, 20 and 22 m/s. The inlet solid mass flow rate was 0.087 kg/s for the first case and 0.097 kg/s for the second one. Static pressure measurements were done in axial and radial coordinates for the entire equipment. The fountain height and fluid mass flow in the annulus were also evaluated during experiments. The Eulerian−Eulerian multifluid modeling approach was applied to predict gas−solid flow behavior. The Gidaspow (1994) drag model and the granular kinetic theory derived by Lun et al. (1984) were adopted here. A commercially available program, FLUENT 6.3, was chosen to carry out computer simulations. CFD simulations were able to predict very well the static pressure profile, fountain height, and fluid mass flow in the annulus.
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